Austin d



(No-Mdel.)

A. D. HOFFMAN.

WATER GLOSET VALVE.

Patented Peb. 16,1892.

l UNITED VSTATES PATENT OFFICE.

AUSTIN D. HOFFMAN, OF MINNEAPOLIS, MINNESOTA, ASSIGN OR TO CHARLES G.BATES, MONROE E. WALLACE, AND BERNHARD HIRTH, OF SAME PLACE.

WATER-CLosEi-,VALVE SPECIFICATION forming part of Letters Patent No.468,876, dated February 16, 1892. Application filed February 27, T891.Serial No. 383,020. (No model.)

.has for its object to providea convenient, ef-

ficient, and reliable flushing device capable of direct attachment tothe Water-supply pipe. To this end to some convenient part of theWater-supply pipe containing Water under pressure from the main orotherwise I place a vertical valve-chest equipped with an ordinarylifting-valve. Fulcrumed to a suitable support adjacent to the valve, ata point near one of its ends, is a valve-operating lever, the short endof which is` attached to the valvestem. In line with the movement of theouter or free end of this lever, and preferably above the same, islocated a dash-pot having its piston connected to the lever. To a lug onthe cylinder of the dash-pot or some other adjacent support above thelever is attached one end of a retracting-spring, the lower end of whichis attached to the lever. As a convenient means for adjusting thetension of this spring, it may be connected with its support by aset-screw or other adjusting device. To the outer extremity of the freeend of the lever is attached by a chain or other flexible connection ahandpull Within convenient reach. The dischargepipe from the valve-chestleading to the closet is preferably enlarged immediatelybelow thevalve-chest to several times the diameter of the supply-pipe and isprovided with a perforation at its upper end for the admission of air,in order to provide an expansion-chamber to relieve the high pressurefrom the main and prevent splashing in the closet-basin. The perforationpermits the drip caught from the valve to be passed to thedischarge-pipe.

All the parts may be secured to a bracket, so that the entire device maybe supplied as an attachment capable of ready connection with thewater-pipe and the closet.

The invention is illustrated in the accolnpanying drawings, wherein likeletters refer .and a part of the discharge-pipe, and Fig. 4

is a vertical section from front to rear through the dash-pot. Y

A is an angular bracket capable of attachment to the wall or othersupport by lugs and set-screws o and a.

B is the valve-chest. b is the inlet to the same, screw-threaded forconnection with supply-pipe C by union C.

D is the enlarged section of the dischargepipe with perforation d, and Dis the section connecting the same with the closet-basin. (Not shown.)

E is the lifting-valve .in the chest B.

F is the operating-lever; f, a link pivotally connected at its upper endto the lever and vat its lower end to the sleeve e, mounted on the capof the valve-chest and removably and adj ustably secured thereon by ascrew c.

G is the cylinder of the dash-pot, secured to an outwardly-extended luga2 at the upper extremity ofthe bracket A.

i G is the piston of the dash-pot, the head of which is provided withthe flexible cup-packing g.

H is the hand-pull, and h is the chain.

K is the retracting-spring, and K is the setscrew mounted in the lug lo,projecting from the top of the cylinder G.

For preventing the lateral displacement of the free end of the lever aguide L may be c secured to the bracket and spaced apart from the same,through which space thus formed the lever is made to work.

The operation is evident. By the handpull I-l the pivoted lever islowered and the valve is raised, permitting the inflow of water from thesupply-pipe to the discharge-pipe and closet-basin. The downward pull ofthe lever sets the retraction-spring under tension, which wouldimmediately and instantly return the lever when set free,but isprevented from doing so by the retarded movement of the dash-pot pistonGf in its cylinder G, which retards the action of the spring, thusallowing the valve to remain open for a suffcientlength to allow enoughwater to escape into the discharge-chamber to effect the flushingrequired. It will thus be seen that the spring K is an automaticretracting device for closing the valve and that the dash-pot is aretarding device to check the closing movement of the valve. It isevident that other devices capa- 'ble of these same actions might besubstituted for the same so long as they are` automatic in their action.It should also be noted that both the dash-pot and spring resist theopen-V ing movement of the lever, thus affording a cushion against anystrain of the parts under a violent usage of the hand-pull. The valve isseated by direct pressure from the main, the construction being suchthat the pressure acts on the top of the valve.

The great advantage of the device is that the arrangement of the leveraffords the requisite power to open the valve against this high pressureand the dash-pot retards the closing movement, avoiding the shock andgiving the requisite discharge.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

The combination, with the angular bracket A, the vertical valve-chest B,andthe press-A ure-seated valve E, of the supply-pipe C C',`

the vertical enlarged discharge-pipe D D', 1ocated below the valve, thesleeve e on the valve-stem cap, the link-fulcrum f, secured to .thesaidsleeve, the lever F, pivoted to said link, having its short endconnected to the valve, the retracting-spring K, the dash-pot 5G, bothattached to the said lever near its

